A reaction mechanical flywheel testing device

Abstract

The invention relates to a reaction mechanical flywheel test device, which is characterized by comprising a test platform (1), a vacuum box (2), a vacuum pump (3), a flywheel mounting seat assembly (4) to be tested, an axial torque measuring assembly (5), a rotation speed measuring assembly (6) and a rotor shaft temperature measuring assembly (7), wherein the axial torque measuring assembly (5), the rotation speed measuring assembly (6) and the rotor shaft temperature measuring assembly (7) are arranged in a vacuum chamber of the vacuum box (2) and are respectively used to test the axial torque, rotation speed and rotation shaft temperature of a rotating body. Compared with the prior art, the invention has the advantages that the rotation speed, torque and temperature test of the rotating body of the flywheel to be tested can be carried out in a state where the sealed cavity of the flywheel body is open, fault problems can be discovered in a timely and accurate manner, and development time can be effectively saved. After all the tests are completed, the base and top cover of the flywheel to be tested are welded and sealed, which effectively saves operation time and development cost.

Description

Technical Field

[0001] The invention relates to a reaction mechanical flywheel testing device. Background Art

[0002] The reaction mechanical flywheel is a key actuator for satellite attitude control. It typically consists of a flywheel body welded together by a base and a top cover. A sealed cavity is formed between the base and the top cover, housing an inertial rotor. The reaction mechanical flywheel generates a reaction torque through the rotation of the inertial rotor. Because the inertial rotor is located within the reaction flywheel's sealed cavity, its high-speed rotation is affected by the vacuum level within the reaction flywheel's sealed cavity. Therefore, requirements are placed on the vacuum level within the reaction flywheel's sealed cavity.

[0003] Currently, ground testing of reaction mechanical flywheels typically involves evacuating the sealed chamber within the flywheel body, where the inertial rotor is located, to ensure a certain vacuum level. This means the flywheel body can only be tested while the sealed chamber remains sealed. Since the inertial rotor is located within the sealed chamber, the rotational state of the inertial rotor cannot be tested in real time. Furthermore, if any problems arise during ground testing, the welded seal of the flywheel must be re-melted. Resolving the issue requires replacing the welded parts, re-sealing the welded seal, and replacing the exhaust nozzle on the flywheel, making both operation and testing complex. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a reaction mechanical flywheel testing device with a simple structure and easy use in response to the above-mentioned existing technology. The reaction mechanical flywheel testing device can perform various tests on the rotating body of the reaction mechanical flywheel when the sealed cavity of the flywheel is open.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a reaction mechanical flywheel testing device for testing a reaction mechanical flywheel, wherein the reaction mechanical flywheel includes a base and a top cover, a sealed cavity is formed between the base and the top cover, and a rotating body is arranged inside the sealed cavity, characterized by comprising:

[0006] test platform;

[0007] A vacuum box is provided on the test platform to form a vacuum cavity, and the vacuum box is provided with an air extraction port and an air extraction valve sealedly connected to the air extraction port;

[0008] A vacuum pump is connected to the vacuum valve through a vacuum pipe and is used to evacuate the vacuum chamber of the vacuum box;

[0009] The flywheel mounting seat assembly to be tested is arranged in the vacuum chamber of the vacuum box and is used to fix the base of the reaction mechanical flywheel and the rotating body arranged on the base;

[0010] The shaft torque measurement assembly is arranged in the vacuum chamber of the vacuum box and connected to the rotating body on the reaction mechanical flywheel to test the shaft torque of the rotating body;

[0011] A speed measuring component is provided in the vacuum chamber of the vacuum box and is used to measure the speed of the rotating body;

[0012] The rotor shaft temperature measuring assembly is arranged in the vacuum chamber of the vacuum box and is used to measure the shaft temperature of the rotating body;

[0013] When testing the reaction mechanical flywheel, only the base of the reaction mechanical flywheel and the rotating body arranged on the base are fixed to the flywheel mounting seat assembly to be tested, and the top cover is not installed so that the sealed cavity of the reaction mechanical flywheel is in an open state.

[0014] As an improvement, the present invention further includes a display component that is communicatively connected to the shaft torque measurement component, the shaft torque measurement component, and the rotor shaft temperature measurement component.

[0015] Preferably, the vacuum box includes a vacuum box base, a vacuum box top cover sealedly connected to the vacuum box base, and a glass observation window is provided on the vacuum box top cover.

[0016] As a further improvement, the vacuum box is connected to a vacuum pressure gauge for displaying pressure data in the vacuum chamber.

[0017] As a further improvement, the present invention further comprises a controller, the vacuum box is sealed with an aviation plug connector, and the reaction mechanical flywheel to be tested, which is sealed and arranged in the vacuum box, is electrically connected to the controller via the aviation plug connector.

[0018] As a preferred solution, the shaft torque measurement assembly includes two support frames, sliding guide rails, a slider, a torque sensor mounting frame, a torque sensor, an adapter shaft, an elastic coupling and a slider fixing screw; the torque sensor is connected to the rotating shaft of the rotating body on the reaction mechanical flywheel to be measured through the elastic coupling and the adapter shaft, the torque sensor is fixed on the torque sensor mounting frame, the two support frames are fixed on both sides of the flywheel mounting seat assembly to be measured, the two support frames are provided with vertically arranged sliding guide rails, the two ends of the torque sensor mounting frame are respectively connected to the sliding guide rails through sliders, the height position of the torque sensor is adjusted by sliding the slider on the sliding guide rail, so that the torque sensor is suitable for the rotating shaft test of the rotating body of the reaction mechanical flywheel to be measured at different heights, and after the position of the slider is adjusted, it is fixed to the sliding guide rail by the slider fixing screw.

[0019] As a preferred solution, the speed measuring assembly includes a speed measuring base, a vertical support guide shaft, a first fixing clamp, a second fixing clamp, a horizontal guide shaft, a speed sensor mounting plate and a speed sensor, wherein the speed sensor is mounted on the speed sensor mounting plate, the speed sensor mounting plate is fixed to the horizontal guide shaft through the first fixing clamp, the horizontal guide shaft is fixed to the vertical support guide shaft through the second fixing clamp, the vertical support guide shaft is fixed in the vacuum box through the speed measuring base, the horizontal position of the speed sensor is adjusted by the first fixing clamp, and the vertical position of the speed sensor is adjusted by the second fixing clamp.

[0020] As a preferred solution, the rotor shaft temperature measurement assembly includes a temperature sensor support frame, an adapter plate, a rotating shaft, a temperature sensor mounting plate and a temperature sensor; wherein the temperature sensor is fixed to the temperature sensor mounting plate by a nut, and the extension length of the sensor is adjusted by the nut, and the two ends of the adapter plate are respectively connected to the temperature sensor support frame and the temperature sensor mounting plate by a rotating shaft, and the angle and position of the sensor are adjusted by the rotating shaft, and the temperature sensor support frame is fixed in the vacuum box.

[0021] As a preferred solution, the flywheel mounting seat assembly to be tested includes a flywheel mounting plate to be tested and a vibration isolator connected to the flywheel mounting plate to be tested.

[0022] Compared with the prior art, the advantages of the present invention are that the speed, torque and temperature tests can be carried out on the rotating body of the flywheel to be tested when the sealed cavity of the flywheel body is open, fault problems can be discovered in a timely and accurate manner, and development time can be effectively saved. After all tests are completed, the base and top cover of the flywheel to be tested are welded and sealed, which effectively saves operation time and development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the three-dimensional structure of the reaction mechanical flywheel testing device in an embodiment of the present invention (internal components are hidden).

[0024] Figure 2 Schematic diagram of the three-dimensional structure of a reaction mechanical flywheel testing device according to an embodiment of the present invention (showing internal components).

[0025] Figure 3 Schematic diagram of the three-dimensional structure of the vacuum box in an embodiment of the present invention.

[0026] Figure 4 Schematic diagram of the three-dimensional structure of the internal components of the vacuum box in an embodiment of the present invention.

[0027] Figure 5 Schematic diagram of the three-dimensional structure of the flywheel mounting seat assembly to be tested in an embodiment of the present invention.

[0028] Figure 6Schematic diagram of the three-dimensional structure of the shaft torque measurement assembly in an embodiment of the present invention.

[0029] Figure 7 Schematic diagram of the three-dimensional structure of the rotation speed measurement component in an embodiment of the present invention.

[0030] Figure 8 Schematic diagram of the three-dimensional structure of the rotor shaft temperature measurement assembly in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 、 2 The reaction mechanical flywheel testing device shown is used to test the reaction mechanical flywheel. Generally, the reaction mechanical flywheel includes a base and a top cover. The base and the top cover are usually sealed by welding. A sealed cavity is formed between the base and the top cover, and a rotating body is arranged inside the sealed cavity.

[0033] The above-mentioned reaction mechanical flywheel test device includes:

[0034] Test platform 1;

[0035] A vacuum box 2 with a vacuum chamber formed therein is provided on the test platform 1, and the vacuum box 2 is provided with an air extraction port and an air extraction valve 21 sealedly connected to the air extraction port;

[0036] A vacuum pump 3 is connected to the vacuum valve 21 via a vacuum pipe and is used to evacuate the vacuum chamber of the vacuum box 2;

[0037] The flywheel mounting base assembly 4 to be tested is arranged in the vacuum chamber of the vacuum box 2 and is used to fix the base of the reaction mechanical flywheel and the rotating body arranged on the base;

[0038] The shaft torque measuring assembly 5 is arranged in the vacuum chamber of the vacuum box 2 and connected to the rotating body on the reaction mechanical flywheel to test the shaft torque of the rotating body;

[0039] The speed measuring assembly 6 is provided in the vacuum chamber of the vacuum box 2 and is located next to the rotating body on the reaction mechanical flywheel, and is used to measure the speed of the rotating body;

[0040] The rotor shaft temperature measuring assembly 7 is arranged in the vacuum chamber of the vacuum box 2, next to the rotating shaft of the rotating body on the reaction mechanical flywheel, and is used to measure the rotating shaft temperature of the rotating body;

[0041] a display assembly 9 in communication with the shaft torque measurement assembly 5 , the shaft torque measurement assembly 5 , and the rotor shaft temperature measurement assembly 7 ;

[0042] The controller 8 and the vacuum box 2 are sealed and connected with an aviation plug connection interface 26. The reaction mechanical flywheel to be tested, which is sealed and arranged in the vacuum box, is electrically connected to the controller 8 through the aviation plug connection interface 26. At the same time, the torque sensor in the shaft torque measurement component 5, the speed sensor in the speed measurement component 6, and the temperature sensor in the rotor shaft temperature measurement component 7 are all electrically connected to the controller 8 through the aviation plug connection interface 26. The display component 9 is also electrically connected to the controller 8.

[0043] When testing the reaction mechanical flywheel, only the base 101 of the reaction mechanical flywheel to be tested and the rotating body 102 arranged on the base are fixed to the flywheel mounting seat assembly 4 to be tested, and the top cover is not installed so that the sealed cavity of the reaction mechanical flywheel is in an open state.

[0044] In this embodiment, the vacuum box 2 includes a vacuum box base 25, a vacuum box top cover 22 sealed with the vacuum box base, the vacuum box top cover 22 is fixed to the vacuum box base 25 by screws, the vacuum box top cover 22 and the vacuum box base 25 are sealed by a sealing ring, and a vacuum cavity is formed inside; a glass observation window 23 is provided on the vacuum box top cover 22, and a vacuum pressure gauge 24 for displaying the pressure data in the vacuum cavity is also connected to the vacuum box top cover 22. Figure 3 shown.

[0045] The flywheel mounting seat assembly 4 to be tested includes a flywheel mounting plate 41 to be tested and a vibration isolator 42 connected to the flywheel mounting plate to be tested. The base 101 of the reaction mechanical flywheel to be tested is mounted on the flywheel mounting plate 41 to be tested. The rotating body 102 of the reaction mechanical flywheel to be tested is mounted on the base 101 of the reaction mechanical flywheel to be tested. The flywheel mounting seat assembly 4 to be tested is installed as a whole inside the vacuum box 2, that is, the flywheel mounting plate 41 is set on the vacuum box base 25 through the vibration isolator 42. Figure 4 、 5 shown.

[0046] The shaft torque measurement assembly 5 includes two support frames 51, sliding guide rails 52, sliders 53, torque sensor mounting frames 54, torque sensors 55, adapter shafts 56, elastic couplings 57 and slider fixing screws 58; the torque sensor 55 is connected to the rotating shaft of the rotating body 102 on the reaction mechanical flywheel to be measured through the elastic coupling 57 and the adapter shaft 56, and the torque sensor 55 is fixed on the torque sensor mounting frame 54. The two support frames 51 are fixed on both sides of the flywheel mounting seat assembly 4 to be measured, and the two support frames 51 are provided with vertically arranged sliding guide rails 52. The two ends of the torque sensor mounting frame 54 are respectively slidably connected to the sliding guide rails 52 through sliders 53. The height position of the torque sensor 55 is adjusted by sliding the slider 53 on the sliding guide rails 52, so that the torque sensor is suitable for the rotating shaft test of the rotating body of the reaction mechanical flywheel to be measured at different heights. After the position of the slider 53 is adjusted, it is fixed to the sliding guide rail 52 by the slider fixing screws 58. Figure 4 、 6 shown.

[0047] The speed measuring assembly 6 includes a speed measuring base 61, a vertical support guide shaft 62, a first fixing clamp 63, a second fixing clamp 64, a horizontal guide shaft 65, a speed sensor mounting plate 66 and a speed sensor 67, wherein the speed sensor 67 is mounted on the speed sensor mounting plate 66, the speed sensor mounting plate 66 is fixed to the horizontal guide shaft 65 by the first fixing clamp 63, the horizontal guide shaft 65 is fixed to the vertical support guide shaft 62 by the second fixing clamp 64, and the vertical support guide shaft is fixed in the vacuum box 2 by the speed measuring base. The horizontal position of the speed sensor is adjusted by the first fixing clamp, and the vertical position of the speed sensor is adjusted by the second fixing clamp. Figure 4 、 7 shown.

[0048] The rotor shaft temperature measurement assembly 7 includes a temperature sensor support frame 71, an adapter plate 72, a rotating shaft 73, a temperature sensor mounting plate 74 and a temperature sensor 75; wherein the temperature sensor 75 is fixed to the temperature sensor mounting plate 74 by a nut 76, and the extension length of the temperature sensor 75 is adjusted by the nut 76. The two ends of the adapter plate 72 are respectively connected to the temperature sensor support frame 71 and the temperature sensor mounting plate 74 by two rotating shafts 73, and the angle and position of the temperature sensor 75 are adjusted by the two rotating shafts 73. The temperature sensor support frame 71 is fixed in the vacuum box 2, that is, the temperature sensor support frame 71 is fixedly set on the vacuum box base 25, see Figure 4 、 8 shown.

[0049] The present invention integrates the vacuum box, controller and vacuum pump on the same workbench, with a compact structure, high integration, and is easy to install and test. Compared with the traditional mechanical flywheel sealing test that requires frequent welding and sealing operations, the present invention can perform various tests on the flywheel rotating body with the flywheel body open, and then weld and seal the flywheel after all the tests are completed, effectively saving operation time and development costs. Compared with the traditional test that finds a problem and then opens the flywheel to find the fault, the present invention can measure the speed, torque and temperature of the mechanical flywheel rotor in real time, and can display it intuitively through the display component, can detect fault problems in a timely and accurate manner, and can effectively save development time. The testing device of the present invention can be applied to different models of flywheel tests, can be used repeatedly, is easy to operate, has a reliable structure, and is low in cost.

Claims

1. A reaction mechanical flywheel testing device for testing a reaction mechanical flywheel, wherein the reaction mechanical flywheel comprises a base and a top cover, a sealed cavity is formed between the base and the top cover, and a rotating body is arranged inside the sealed cavity, characterized in that include: Test platform (1); A vacuum box (2) is provided on the test platform (1) and has a vacuum cavity formed therein. The vacuum box (2) is provided with a vacuum port and a vacuum valve (21) sealedly connected to the vacuum port. A vacuum pump (3), the vacuum pump (3) is connected to the vacuum valve (21) via a vacuum pipe, and is used to evacuate the vacuum chamber of the vacuum box (2); A flywheel mounting seat assembly (4) to be tested is arranged in the vacuum chamber of the vacuum box (2) and is used to fix the base of the reaction mechanical flywheel and a rotating body arranged on the base; A shaft torque measuring assembly (5) is arranged in the vacuum chamber of the vacuum box (2) and is connected to the rotating body on the reaction mechanical flywheel, and is used to test the shaft torque of the rotating body; A rotation speed measuring component (6) is arranged in the vacuum chamber of the vacuum box (2) and is used to test the rotation speed of the rotating body; A rotor shaft temperature measuring assembly (7), arranged in the vacuum chamber of the vacuum box (2), for measuring the shaft temperature of the rotating body; When testing a reaction mechanical flywheel, only the base of the reaction mechanical flywheel and the rotating body arranged on the base are fixed on the flywheel mounting seat assembly (4) to be tested, and the top cover is not installed so that the sealed cavity of the reaction mechanical flywheel is in an open state; a display assembly (9) is connected to the shaft torque measurement assembly (5), the speed measurement assembly (6) and the rotor shaft temperature measurement assembly (7); and a vacuum pressure gauge (24) for displaying pressure data in the vacuum cavity is connected to the vacuum box (2).

2. The reaction mechanical flywheel testing device according to claim 1, characterized in that: The vacuum box (2) comprises a vacuum box base (21), a vacuum box top cover (22) sealed to the vacuum box base, and a glass observation window (23) is provided on the vacuum box top cover (22).

3. The reaction mechanical flywheel testing device according to claim 1, characterized in that: It also includes a controller (8), the vacuum box (2) is sealed with an aviation plug connection interface (25), and the reaction mechanical flywheel to be tested, which is sealed and arranged in the vacuum box, is communicatively connected to the controller via the aviation plug connection interface.

4. The reaction mechanical flywheel testing device according to claim 1, characterized in that: The shaft torque measurement assembly (5) comprises two support frames (51), a sliding guide rail (52), a slider (53), a torque sensor mounting frame (54), a torque sensor (55), a transfer shaft (56), an elastic coupling (57) and a slider fixing screw (58); the torque sensor (55) is connected to the rotating shaft of the rotating body on the reaction mechanical flywheel to be measured through the elastic coupling (57) and the transfer shaft (56); the torque sensor (55) is fixed on the torque sensor mounting frame (54); the two support frames (51) are fixed on the flywheel to be measured. On both sides of the wheel mounting seat assembly (4), the two support frames (51) are provided with vertically arranged sliding guide rails (52), and the two ends of the torque sensor mounting frame (54) are respectively connected to the sliding guide rails (52) by sliding sliders (53). The height position of the torque sensor (55) is adjusted by sliding the slider (53) on the sliding guide rails (52), so that the torque sensor is suitable for the rotating shaft test of the rotating body of the reaction mechanical flywheel to be tested at different heights. After the position of the slider (53) is adjusted, it is fixed to the sliding guide rail (52) by the slider fixing screw (58).

5. The reaction mechanical flywheel testing device according to claim 1, characterized in that: The speed measuring assembly (6) comprises a speed measuring base (61), a vertical support guide shaft (62), a first fixing clamp (63), a second fixing clamp (64), a horizontal guide shaft (65), a speed sensor mounting plate (66) and a speed sensor (67), wherein the speed sensor (67) is mounted on the speed sensor mounting plate (66), the speed sensor mounting plate (66) is fixed to the horizontal guide shaft (65) via the first fixing clamp (63), the horizontal guide shaft (65) is fixed to the vertical support guide shaft (62) via the second fixing clamp (64), the vertical support guide shaft is fixed in the vacuum box (2) via the speed measuring base, the horizontal position of the speed sensor is adjusted by the first fixing clamp, and the vertical position of the speed sensor is adjusted by the second fixing clamp.

6. The reaction mechanical flywheel testing device according to claim 1, characterized in that: The rotor shaft temperature measurement assembly (7) comprises a temperature sensor support frame (71), an adapter plate (72), a rotating shaft (73), a temperature sensor mounting plate (74), and a temperature sensor (75); wherein the temperature sensor (75) is fixed to the temperature sensor mounting plate (74) via a nut (76), and the extension length of the temperature sensor (75) is adjusted via the nut (76); both ends of the adapter plate (72) are connected to the temperature sensor support frame (71) and the temperature sensor mounting plate (74) via two rotating shafts (73), and the angle and position of the temperature sensor (75) are adjusted via the two rotating shafts (73); and the temperature sensor support frame (71) is fixed in the vacuum box (2).

7. The reaction mechanical flywheel testing device according to claim 1, characterized in that: The flywheel mounting seat assembly (4) to be tested comprises a flywheel mounting plate to be tested and a vibration isolator connected to the flywheel mounting plate to be tested.

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